From Wall Street Journal:
Here's article: E-Cigarettes Spark New Smoking War - WSJ.com
The future of the fledgling industry—estimated at $100 million in annual sales and rising—may hinge on the outcome of a case scheduled for oral arguments before a federal appellate court in Washington, D.C., next month. The FDA is fighting to regulate the products as drug-delivery devices, similar to nicotine gums, patches or other nicotine-replacement products. Such a classification would subject e-cigarettes to lengthy and expensive trials to prove they are safe and effective.
Here's article: E-Cigarettes Spark New Smoking War - WSJ.com